Machine for whitening or working leather



3 Sheets-Sheet l.

(No Model.)

Patented M116, 1891..

ww W,

(.No Model.) a' 3 Sheets-Sheet 2.

' J.'W. VAUGHN. MACHINE FOR WHITENING 0R WORKING LEATHER.

(NdModel.) 3 sheetsssheen 3.

J'. W. `VAUGHN. MACHINE `FOR WHITE'NING 0R WORKING LEATHER.

Patented Jan. 6, 1891.

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UNITED, STATES VPATENT Orrrcn.V

JOSEPH W. VAUGHN, OF SALEM, MASSACHUSETTS, ASSIGNOR TO THE VAUGHN MOROCCO MACHINE COMPANY, OF PORTLAND, MAINE.

MACHINE FOR WHITENING OR WORKING LEATHER.

SPECIFICATION forming part of LettersrPatent No. 444,164, dated January 6, 1891.

Application filed April 30,1890. Serial No. 350,050 (No model.)

.To @ZZ whom it may concern:

Be it known that I, JOSEPH W. VAUGHN, of Salem, in the county of Essex, State of Massachusetts, have invented certain new and useful Improvements in Machines for Whitening or Working Leather, of which the following is a description suiiiciently full, clear, and exact to enable any person skilled in the art or science to which said invention ro appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which* Figure 1 is a side elevation of my improved machine; Fig. 2, a central vertical longitudinal section of the same; Fig. 3, a vertical transverse section taken on line a: a: in Fig. 1; Fig. 4, a similar view taken on line y y in Fig. 1, and Fig. 5 a sectional view taken on 2o line 200 in Fig. 2.

Like letters and gures of reference indicate corresponding parts in the different figures of the drawings.

My invention relates especially to machines for whitening or Working leather during the process of manufacture; and it consists in certain novel features hereinafter fully set forth and claimed, the object being to produce a simpler, cheaper, and more effective device of 3o this character than is now in ordinary use.

The nature and operation of the improvement Will be readily understood by all conversant with such matters from the following explanation.

3 5 In the drawings, A represents the frame of the machine,which consists, primarily, of two parallel verticallyarranged end pieces or standards b, secured to a bed-plate d and connected at their tops by a cross-tief. Each 4o standard b is provided with a horizontally-arranged arm c projecting from the front thereof, said arms being Vconnected at their tops by a brace h. A central circular opening iis formed in each standard b, and a tri-arm brace j is secured across said opening. A large gear 7c is disposed in each opening 1,', and is secured to the tri-arm brace j by bolts l. A horizontal stub -shaft m projects centrally through each opening i and is journaled in '5obearings p on the braces j, said shafts being in alignment and passing respectively through the hubs q of the gears 7c. A wheel B is keyed to the inner end of each shaft m, the hubs r of said wheels being elongated and projecting into or through the hubs q of the gears k, in which they work, as shown in Fig. 3. A horizontally-arranged shaft t, parallel with the shafts m, is journaled in sleeves o, secured in boxes c' on the wheels B by means of setscrews 15, as best shown in Fig. 3, said sleeves 6o forming crank-pins for connecting-rods D, hereinafter described. To each end of the shaft t a pinion 16 is keyed, said pinions respectively meshing with the gears lo. A pulley 17 is mounted on the shaft t at the inner 65 end of each sleeve v, and pivoted by one end on each of said sleeves between the adjacent pulley 17 and the box e' there is a longitudinally-arranged connectingrod or crank-lever D. A shoulder 18, formed on the sleeves be- 7o tween each rod D and the adjacent box, prevents longitudinal movement of the-shaft.

A horizontally-arranged main shaft C is journaled in the lowerl portion of the frame A on the front legs of the standards b and bears a centrally-arranged sprocket-wheel 2O (see Fig. 3) and a similar sprocket-wheel 21 at each end. A fast pulley 22 and loose pulley 23 are disposed on an outer end of said shaft. Alarge sprocket-Wheel 24 is mounted 8o on the outer end of each stub-shaft m, said wheels being respectively' connected by a jack-chain 25 with a sprocket 21 on the shaft C. On each body-arm g a longitudinally-arranged horizontal track or way 26 (sec Fig. 85

2) is disposed, said ways being adjustable vertically by set-screws 27, passing through lugs 28 on said arms. Openings or slots 190 are formed in the frame-arms g and ears 120 on the ways 26 (see Figs. 4 and 5) project 9c through said slots. Set-screws 122 work in lugs 123 on the outer side of vthe arms g and engage said ears, preventing lateral tilting of the ways. A cross-sectional V-shaped oil groove or duct 121 is formed in the upper face 95 cf each way. A

A cross-head or roll-carriage F consists of two vertical arms 29, connected by a bar and having their upper ends forked (see Fig. 4) and fitted to slide on the ways 26. A hori- Ioo zcntally-arranged shaft 30 is fitted to rotate in the lower ends of the carriage-arms 29. A

centrally-disposcd whitening-roll ll is secured on said shaft and provided at each en d with a hub Si, said hubs serving as pulleys over which belts pass, connecting them with the pulleys 17 on the pinion-shaft t, whereby said roll is driven. The forward ends of the connecting-rods D work on the bearings of the shaft $30, as shown in Fig. i. The lower section of the belts 32 pass over centrally-disposed guides or tension -pulleys 33, connecting said rods g. A horizontally arranged worm grinder 100, of ordinary construction, is mounted on the connecting-rod D in contact with the blades of the whitening-roll H.

A bench or table l( is disposed in front of the machine below the arms g, said bench comprising` vertical metallic legs Si, supported in bases 35, the side legs being respectively connected at the top by side bars 3d. Two horizontal bars and 5l connect each set of legs .'-S-t, and are fitted to slide vertically thereon. Levers and l, pivoted together and respectively to said bars, form toggle-joints between them. The central pivots of said joints are connected by horizontal rods 55, said rods at opposite sides of the bench being connected by a cross-bar 5G. Adjusting-screws G0 pass through openings in the bars or side rails 3G and work in the sliding bars 30 of the bench, said screws being provided with hand-wheels Gl, whereby the position of the bars in relation to said rails may be regulated and the action of the toggle-j oints on said bars determined. The upper ends of corresponding screws tlO at cach side of the bench are connected by flat metallic bars 57, which support a centrally-arranged horizontal bed it), provided with a flexible covering .l2 and disposed in position to be engaged bythe whitening-roll ll. ,Short laterally-arranged bars 3T are mounted on the side rails 33t, at each side of the bed and support leaves tl,which form the table proper of the bench. A horizontal laterally-arranged shaft G2 is journalcd in bearings on the base of the bench near the rear thereof and bears a sprocket-wheel (3:5 of the same size as the sprockets on the stubshafts in. A jack -chai'n (it connects said wheel with the central sprocket 2O on the main shaft; C. A smaller sprocket-wheel. is mounted on the shaft 62. A shaft 0G, parallel with the shaft G2, is mounted on the base of the bench near its front end and bears a sprocket-wheel 6T, connected by a jack-chain (5S with the sprocket 155 on the shaft G2. A treadle-lever has one endpivoted centrally on the shaft 62, said lever projecting outward to the front of the bench, where it is provided with a foot-plate 7l. A vertical spindle or rod 72 is mounted in a step on the tloor and a bracket T3 on the cross-bar 37 of the bench. Said spindle passes through the outer end of the treadle, and is provided at its top with a hand-wheel 'A and at its lower end with a nut for determining the stroke of the treadle. A chain 75 passes over a pulley 7G and connects the treadle with the toggle-bars 55. On each bench-shaft (52 and U0 cams SO are mounted, said cams being in engagement with the lower sliding bars 5l, which are actuated thereby.

ln the use of my improvement, power being applied to the main shaft C, the stilbshafts m and bench-shafts (52 and 6G are driven conjointly thereby at the same rate of speed and in the same direction. The large wheels or disks ll, keyed on said stub-shafts, are rotated thereby. The shaft if, journalcd in the boxes 2, fixed on said disks, is carried thereby, and the pinions le' on said shaft, traveling on the fixed gears 7o in the frame, rapidly rotate said shaft t. The pulley 17, carried by said shaft and belted to the whitening-roll ll, as described, rapidly rotates said roll. As the disks or wheels B revolve, the crank levers or beams l), pivoted on the shaft t and to the bearings of the whitening-roll ll, reciprocate the roll-carriage l? on its ways 2U. The parts being in the position shown in the drawings, as the roll-carriage is driven forward on its ways it is ont of contact with the bed i. The leather being disposed on the bed, as the roll'carriage begins to recede 01 is drawn backward by the crank mechanism the operator depresses the trcadle 70, drawing forward the toggle-joints and forcing the sliding bars 50 and 5l apart. The cams 8O on the bench-shafts, coming into contact with the lower bar 5l, conjointly act to force said bar upward, raising the bed tO and forcing the leather' into contact with the revolving roll, which operates thereon during the complete return of the carriage. The cams are so constructed that they hold the bed evenly in its elevated position until the roll ll nearly reaches the inner end of said bed, when the cams permit the rapid fall of said bed to its normal position. The tension of the table against the roll may readily be adjusted by the screws G0. rlhe roll may be of any suitable construction; but I deem itprefcrable to employ the form shown, in which the workingface provided with centrallydivergin g branched cutting blades. The sleeves or crank-pins t', which also serve as bearings for the pinion-shaft t, being adjusted radially in relation to the crank-disks 13 permits gears and pinions of different sizes to be substituted for the gears 7.: and pinions 1G, whereby the speed of said shaft t, and hence of; the whitening-roll ll, may be greatly increased, if desired.

I do not confine myself to using two fixed gears /r/ and two pinions 1G or to connecting more than one of the stub-shafts to the main shaft, as the shaft t may be rotated by means of one pinion and gear and the disk on the opposite stub-shaft be caused to rotate by said shaft as it travels.

Having thus explained my invention, what I claim is- 1. In a leather-machine, the combination of a carriage, a sun-gear, a shaft, a crankdisk on said shaft, a tubular crank-pin on IOO losv

IIO

said crank-disk, a rotary revolving shaft supported at one end in said tubular crank-pin and having a suitable bearing at the other end, a planetary pinion on said rotary revolving shaft meshing with said sun-gear, a pitinan connecting said crank-pin with said carriage, a pulley on said rotary revolving shaft, a belt connecting said pulley with a pulley on the carriage, and a leather-supporting table beneath said carriage, substantially as described.

2. In a leather-working machine, the combination of a reciprocating tool-carriage and a bench for supporting the leather, consisting of upright standards, frames one above the other adapted to slide vertically on said standn ards, a bed supported on the upper frame, toggle-levers connecting said frames, a treadle mechanism for actuating said toggle-levers to adjust the bed, and cams actuated by the driving mechanism for raising and lowering the bed at regular intervals.

JOSEPH W. VAUGHN. Witnesses:

O. M. SHAW, K. DURFEE. 

